module ActiveSupport::Cache::Strategy::LocalCache

Caches that implement LocalCache will be backed by an in-memory cache for the duration of a block. Repeated calls to the cache for the same key will hit the in-memory cache for faster access.

Public Instance Methods

middleware() click to toggle source

Middleware class can be inserted as a Rack handler to be local cache for the duration of request.

# File lib/active_support/cache/strategy/local_cache.rb, line 75
def middleware
  @middleware ||= Middleware.new(
    "ActiveSupport::Cache::Strategy::LocalCache",
    local_cache_key)
end
with_local_cache() { || ... } click to toggle source

Use a local cache for the duration of block.

# File lib/active_support/cache/strategy/local_cache.rb, line 70
def with_local_cache
  use_temporary_local_cache(LocalStore.new) { yield }
end

Private Instance Methods

bypass_local_cache() { || ... } click to toggle source
# File lib/active_support/cache/strategy/local_cache.rb, line 156
def bypass_local_cache
  use_temporary_local_cache(nil) { yield }
end
local_cache() click to toggle source
# File lib/active_support/cache/strategy/local_cache.rb, line 152
def local_cache
  LocalCacheRegistry.cache_for(local_cache_key)
end
local_cache_key() click to toggle source
# File lib/active_support/cache/strategy/local_cache.rb, line 148
def local_cache_key
  @local_cache_key ||= "#{self.class.name.underscore}_local_cache_#{object_id}".gsub(/[\/-]/, '_').to_sym
end
use_temporary_local_cache(temporary_cache) { || ... } click to toggle source
# File lib/active_support/cache/strategy/local_cache.rb, line 160
def use_temporary_local_cache(temporary_cache)
  save_cache = LocalCacheRegistry.cache_for(local_cache_key)
  begin
    LocalCacheRegistry.set_cache_for(local_cache_key, temporary_cache)
    yield
  ensure
    LocalCacheRegistry.set_cache_for(local_cache_key, save_cache)
  end
end